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/* -*- C++ -*- */
//=============================================================================
/**
* @file QoS_Session.h
*
* $Id$
*
* @author Vishal Kachroo <vishal@cs.wustl.edu>
*/
//=============================================================================
#ifndef ACE_QOS_SESSION_H
#define ACE_QOS_SESSION_H
#include "ace/pre.h"
#include "ace/INET_Addr.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
class ACE_SOCK;
class ACE_QoS_Manager;
typedef int ACE_Protocol_ID;
// IPPROTO_UDP or IPPROTO_TCP.
/**
* @class ACE_QoS_Session
*
* @brief A QoS Session object.
*
* This class defines the interface for a QoS Session. It abstracts the
* notion of QoS on different platforms and presents a simple, easy-to-use
* API. Current [RAPI,GQoS] and future implementations will conform to this
* interface.
*/
class ACE_Export ACE_QoS_Session
{
public:
/// A flag to indicate if this endpoint is a sender or a receiver or
/// both.
enum ACE_End_Point_Type
{
ACE_QOS_SENDER,
ACE_QOS_RECEIVER,
ACE_QOS_BOTH
};
/// to shutup g++.
virtual ~ACE_QoS_Session (void) {};
/// Open a QoS session [dest IP, dest port, Protocol ID].
virtual int open (ACE_INET_Addr dest_addr,
ACE_Protocol_ID protocol_id) = 0;
/// Close the QoS Session.
virtual int close (void) = 0;
/// Returns the QoS in the current session.
virtual ACE_QoS qos (void) const = 0;
/// Set QoS for the current session. The qos manager is used to
/// confirm if this QoS session was subscribed to by the socket.
virtual int qos (ACE_SOCK *socket,
ACE_QoS_Manager *qos_manager,
const ACE_QoS &ace_qos) = 0;
/**
* Sets the QoS for this session object to ace_qos. Does not
* interfere with the QoS in the underlying socket. This call is
* useful to update the QoS object when the underlying socket QoS is
* being set through a mechanism other than the previous qos ()
* method e.g. inside the dgram_mcast.subscribe () where the QoS for
* the socket is set through ACE_OS::join_leaf ().
*/
virtual void qos (const ACE_QoS &ace_qos) = 0;
/**
* This is called from handle_qos () method of the the QoS Event
* Handler. Invoking this method is an indication of a QoS event
* occurring, that may have resulted in a change of QoS for the
* underlying session. This method updates the QoS object associated
* with this session.
*/
virtual int update_qos (void) = 0;
/// Get/Set methods for the flags_.
virtual ACE_End_Point_Type flags (void) const = 0;
virtual void flags (const ACE_End_Point_Type flags) = 0;
/// Get the session id.
virtual int session_id (void) const = 0;
/// Set the session id.
virtual void session_id (const int session_id) = 0;
/// Get the file descriptor on which RSVP events will occur.
virtual ACE_HANDLE rsvp_events_handle (void) = 0;
/// Get the destination address for this session.
virtual ACE_INET_Addr dest_addr (void) const = 0;
/// Set the destination address for this session.
virtual void dest_addr (const ACE_INET_Addr &dest_addr) = 0;
/// Get the source port for this session.
virtual u_short source_port (void) const = 0;
/// Set the source port for this session.
virtual void source_port (const u_short &source_port) = 0;
/**
* Returns the version of the underlying RSVP implementation. Is
* meaningful only when the underlying implementation has
* versioning.
*/
virtual int version (void) = 0;
protected:
/// Source port if this is a Sender session. Used for rapi_sender ().
u_short source_port_;
/// session id for the session.
int session_id_;
/// Destination address for this session.
ACE_INET_Addr dest_addr_;
/// Is this a TCP or a UDP session.
ACE_Protocol_ID protocol_id_;
/// QoS for this session.
ACE_QoS qos_;
/// Specifies if this is a sending/receiving/both session.
ACE_End_Point_Type flags_;
};
#include "ace/post.h"
#endif /* ACE_QOS_SESSION_H */
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